Coughing in pets is a common reason for veterinary visits, and while it can sometimes be mild and self-limiting, it can also be a sign of something more serious. Understanding what coughing looks like in dogs and cats — and what other symptoms to watch for — can help you know when it’s time to seek veterinary care.
What Does Coughing Look Like in Pets?
Dogs
In dogs, coughing is usually fairly obvious and sounds like what most people expect a cough to be. However, there are a few variations:
- A classic, repetitive hacking cough
- A sound like they are trying to clear their throat
- Occasionally a more forceful, dry cough that seems persistent or irritating
One thing that is commonly mistaken for coughing is reverse sneezing. This can sound alarming, but it is usually just a dog’s way of clearing the back of their throat or nasal passages. During an episode, dogs may rapidly inhale and make snorting or honking sounds, but it is typically not a true respiratory emergency.
Cats
Coughing in cats often looks very different from dogs and can be more subtle:
- A low, soft cough
- A crouched position with the neck stretched forward
- Episodes that may look like retching or trying to vomit hairballs
Because it can be difficult to tell coughing from vomiting in cats, many pet owners find it helpful to watch videos of coughing cats online for comparison. If you’re unsure, your veterinarian can help you differentiate the two.
When Should You Contact a Vet?
If you suspect your pet is coughing, it’s always best to contact your veterinarian. Coughing can be contagious in many cases, so it’s important to call ahead when arriving at the clinic. Some veterinary hospitals may ask you to wait in your car to reduce exposure to other pets.
You should also pay attention to any additional symptoms, including:
- Coughing up fluid or phlegm
- Sneezing
- Nasal discharge (clear, yellow, or green)
- Fever
- Decreased appetite
- Lethargy or reduced energy
These details are very important to share with your veterinary team, as they help guide diagnosis and treatment.
How Vets Diagnose the Reason for a Cough
When evaluating a coughing pet, veterinarians may recommend several diagnostic tests, including:
- Radiographs (X-rays) of the chest and throat to evaluate the lungs and airways
- Lab work to assess overall health and detect infection or inflammation
- Heartworm testing
- Fecal testing to check for parasites such as lungworms
These diagnostics help determine whether the cause is infectious, inflammatory, parasitic, cardiac, or something else entirely.
Treatment Options
Treatment depends entirely on the underlying cause and can range widely, including:
- Cough suppressants
- Antibiotics
- Antiparasitic medications
- Inhaled therapies
- Hospitalization and oxygen support in more severe cases
Early diagnosis and treatment are important, as some conditions can worsen quickly without intervention.
Common Causes of Coughing in Pets
Kennel Cough
“Kennel cough” is a general term for contagious upper respiratory infections in dogs. It can be caused by a combination of viruses and bacteria — often more than one at a time — similar to the human “common cold.”
Typical signs include:
- A dry, hacking cough
- Coughing like something is stuck in the throat
- Otherwise normal energy, appetite, and temperature
Even though many dogs seem otherwise healthy, kennel cough is highly contagious and can occasionally progress into more serious infections. Veterinary care is recommended as soon as symptoms appear.
Treatment is usually straightforward, but the cough can persist for weeks, and dogs may remain contagious during recovery. We typically recommend waiting at least one week after symptoms resolve before reintroducing your pet to social settings.
Because it spreads easily in close-contact environments like boarding facilities, doggy daycare, and dog parks, vaccination is strongly recommended. The kennel cough vaccine helps reduce both the severity and duration of illness but does not protect against every infectious cause.
Canine Influenza
Canine influenza is a viral respiratory infection similar to the human flu. The most common strain in dogs is H3N2.
Signs often include:
- Coughing
- Fever
- Reduced appetite and energy
- Yellow nasal discharge
Unlike kennel cough, dogs with influenza often feel significantly unwell. Diagnosis may require radiographs, and treatment is more intensive to manage fever and systemic illness.
Vaccination is strongly recommended for dogs that frequent social environments such as daycare or dog parks.
Pneumonia
Pneumonia is a broad term that refers to infection in the lungs and can result from:
- Viral or bacterial infection
- Fungal infection
- Parasites
- Aspiration (inhaling vomit or foreign material)
- Secondary complications from prolonged coughing or illness
Bronchitis
Bronchitis refers to inflammation of the airways and increased mucus production. Primary causes can range broadly and the secondary inflammation can create a cycle:
Inflammation → mucus → coughing → more inflammation
Because of this “snowball effect,” early treatment is essential to prevent chronic disease.
Parasites
Certain parasites can also cause coughing, including:
- Heartworm disease
- Lungworms
These conditions require targeted diagnostic testing and specific treatments, often over an extended period.
Asthma and Hyperresponsive Airways
More common in cats, asthma and airway hypersensitivity involve chronic inflammation of the airways, often linked to allergies or environmental triggers.
Signs may include:
- Coughing or wheezing
- Exercise intolerance
Treatment may involve medications and inhalers designed specifically for pets, along with reducing environmental irritants.
Collapsing Trachea
This condition is most common in small and toy breed dogs. It occurs when the cartilage rings of the trachea weaken, leading to a narrowed airway.
- Progressive condition
- Often causes a cough that can lead to respiratory distress
- Management includes medication, lifestyle changes, and sometimes surgery
- Harnesses are recommended instead of collars to reduce airway pressure
Other Serious Causes
Less commonly, coughing may be associated with heart disease, cancer, or other systemic illnesses. These conditions require prompt veterinary evaluation and advanced diagnostics.
Final Thoughts
Coughing in pets should never be ignored. While some causes are mild and easily treated, others can be serious or contagious. If your pet develops a cough — especially alongside other symptoms like fever, nasal discharge, or decreased energy — it’s best to have them evaluated by a veterinarian as soon as possible.
Early diagnosis leads to better outcomes and helps protect other pets in the community as well.
